Nipple-chuck.



V. R. KOONTZ.

NIPPLE CHUCK.

APPLICATION FILED BEPT.10. 191s.

Patented Nov. 24, 1914.

2 SHEETSSHEET 1.

Inventor Attorneys V. R. KOONTZ.

NIPPLE CHUCK.

APPLIUATION FILED SEPT. 10, 1am.

1,118,781, 1 Patented N0v.24, 1914.

2 SHEETS-SHEET 2 Inventor VICTOR R. KOON'I'Z, 0F WAYNESBORO, PENNSYLVANIlIA.

NIPPLE-CHUCK.

Specification of Letters Patent.

Patented Nov. 24, 1914.

Application filed September 10, 1913. Serial No. 789,150.

To all whom it may concern:

Be it known that I, VIo'ron R. Koon'rz, a citizen of the United States, residing at Waynesboro, in the county of Franklln and State of Pennsylvania, have invented a new and useful Nipple-Chuck, of which the following is a specification. i

The present invention relates to improvements in nipple chucks, one object of the invention beingtheprovision of a chuck provided with automatic closing means for causing the gripping of the nipple after the same is moved toward nipple engaging position, there being provided means for releasing the grips under other condit1ons.

A further object of the present invent on is the provision of a nipple chuck having two or more sliding thread engaging blocks held in spaced relation, with means for automatically moving the same into nipple engagin position during the cutting thereof.

With the foregoing and other objects 1n view which will appear as the description proceeds, invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without de parting from the spirit of the invention.

In the drawings Figure 1 is a side elevation of a chuck, showing the relative position of the same to the means for closing the looks or jaws thereof. Fig. 2 is a front elevation thereof. Fig. 3 is a section taken on line 3-3 of Fig. 2. Fig. 4 is a perspective view of the chuck as applied to a thread cut,-

ting machine. Fig. 5 is a detail top plan view of the means for mechanically actuating the blocks or jaws.

Referring to the drawings, the numeral 1 designates the shank which is adapted to be connected to a carriage of the thread cutting machine, the same having secured upon one end, the chuck 2, provided with the transversely disposed recess 3 in the outer face thereof. Mounted for sliding movement within the recess 3, are the two blocks 4, to which are adjustably connected the two jaws 5, each of which is provided with its thread gripping portionfi. The jaws 5 are each provided with the two elongated slots 7 for the reception of the adjusting and locking bolts 8 by means of which each of the respective jaws are connected to the respective blocks l. i f p A rectangular opening is formed in each block 4 for the reception of the rectangular member 10 carried by the pin 10 in the upper end of its respective actuating lever 11.

. In the present case, two levers 11 are provided, and each is properly pivoted to the rear of the chuck 2 by means of the pin 12, the spring 13 being connected by means of the pins 14: to the lower depending ends of the levers 11 to normally hold such lower ends together and consequently the blocks t separated.

A bar 16 is disposed in the path of the lower engaging end 15 of the levers 11, said levers as clearly shown in Figs. 1, 2 and 4 being astride the bar, so that when the chuck is moved in extreme forward direction, the lower end 15 will engage the outwardly inclined faces 18 and ride thereupon so that when they are engaged with the parallel edges 19 of the bar, which are of greater width than the intermediate portion of the bar, the lower end 15 of the levers will be moved outwardly against the tension of the spring 13 and the blocks 4 and jaws 5 will be moved inwardly into pipe or nipple engaging osition.

In orc er to assist in holding the respective jaws 5 in position, and to adjust the same primarily before locking the bolt 8, the set. screws are connected and carried by each block 4 at the outer edge thereof. By this means as before described, the jaw 5 of the cutter in the block 4 may be properly positioned so that the inner faces thereof will properly parallel each other and aline when moved into and out of engagement.

From the foregoing description taken in connection with the drawings, it is evident that the blocks 4 and jaws 6 are moved into and out of engagement due to the relative position of the chuck 2 and its carrying member of the machine to the cam 19 of the bar 16 an extreme outward position moving them into locking engagement. When the lower ends of the levers 11 are adjacent the reduced portion of the bar, the spring 13. comes into action and moves and holds the block 4 and jaws 6 separated.

It is evident with this construction that nipples are readily placed in position and automatically gripped and held during the cutting thereof, the simple moving of the chuck relatively to the cutter head permitting the opening and closing of the same to release and grip the nipple.

What is claimed is:

A nipple chuck, including a supporting frame, a head mounted thereon for sliding movement, two slidably mounted jaws carried by the head, two levers pivoted to the rear of the head and having their upper free ends operably connected to the jaws, their lower ends being projected downwardly and at right angles to the head, a spring connected to the free ends of the levers for holding the same together and the jaws separated, and a bar mounted in the support below the the levers permits the spring to operate to hold the jaws open, the enlarged portion of the bar operating the levers to move the jaws together.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

VICTOR R. KOONTZ.

Witnesses S. G. CUNNINGHAM, T. S. CUNNINGHAM.

Comet at this patent may be obtained for five cents each, by addressing the (lommissioner of new, Washington, D. ll. 

